XLV] 



NEOCHEIROPTERIS 



219 



marked mid-ribs of the successive lobes, right and left, form a katadromic 

 helicoid system. The whole of this characteristic blade is in fact constructed 

 on the same plan as that of M. pcctijiata. But the venation is reticulate, of 



Fig. 727. Neocheiropteris pabnatopedata (Bak.) Christ, Habit-figure of 

 plant from South China {\ natural size). After Christ. 



the anaxcti type, as in Dipteris. The Fern is homophyllous, and bears 

 large naked sori disposed \\\ rows, one on either side of the main veins: in 

 fact, as in the simple type of Dipteris Lobbiana. 



